Device for sharpening the rotary circular knives of meat-slicing machines.



I W.A A. VAN BERKEL. -1 l DEVICE FOB. SHAREENING THE ROTARY CIRCULAR KNIVES OP MEAT vSLICINGA MACHINES.

APPLICATION FILED APR. 24. 1908.

l 947,606, Patented Jams, 1910. Y l i 4 sums-SHEET 1. 4Z Z 1n e 5 w Z Y 6 E 1 I if L g f' 79M I e n; -l 'rw" *fs '-2 H902' Z T "lill-)971% W. A. VAN BERKEL. vDEVICE I OR SHARPENING THE ROTARYl GIRGULAR.KIUVES 0F MEAT SLIGING MACHINES.

APPLIOATIONIILBD APB. 24. 190s.

Patented Jan 1910. l

4 SHEETSSH-EET 2.

munew, a. samba co.. .wgwumqumlg W. A.- VAN BERKEL. Y DEVICE FOB SHARPENING THE ROTARY GIRULAR KNIVES 0F MEAT SLIGING MACHINES.

APPLICATION FILED APB. 24. 190B.

947,606 I Patenauan. 25, 1910;-

Il l f 14 16' '5w-*vf il! IlE W. A'. VANBERKEL. DEVISE FOR SHARPENING `THE ROTARY CIRCULAR KNIVESOP'MEAT SLIGING MACHINES.

` APPLICATION FILED APR. 24. 1908.'

u Patented Jan, 25,1910.

4 SHEETS-SHEET 4.

i'neasseg if b nmniw` B. annum cn.. PummurnoGRAPnERs. WASNLNGYON. u C.

UNITED sTATEs PATENT oEEIoE.

WILHELMUS ADRIANUS VAN BERKEL, OE ROTTERDAM, NETHERLANDS, ASSIGNOR T VAN BERKELS SLICING MACHINE MANUFACTURING- COMPANY, LIMITED, 0F LONDON, ENGLAND, A CORPORATION OF GREAT BRITAIN.

DEVICE FOR SHARPENING THE ROTARY CIRCULAR KNIVES 0F MEAT-SLICING MACHINES.

Specification of Letters Patent. Ptgnted Jan, 25, 1910, Application filed April 24, 1908. Serial No, 423,921.

a removable bracket a provided with a base To all whom it may concern:

Be it known that I, VILHELMUS Anni, b and a socket c, the latter having a laterally ANUS VAN BERKEL, of 54 Boezemsingel, Iotprojecting forked arm c1. Adjustably car- 55 `terdam, Netherlands, a subject of the Queen Ied in the socket c is an uprightand re,

of the Netherlands, have invented certain movable spindle Z having at its upper end new and useful Improvements in Devices a horizontally disposed bracket or support e for Sharpening the Rotary Circular Knives provided with a vertical extension f Seof` Meat-Slicing Machines, of which the folcured to the under face of the bracket e, and 60 y lowing is a specification. immediately behind the spindle (Z, is a down- This invention relates to devices for wardly projecting screw pin g, provided sharpening the rotary circular knives of with a milled nut Zt having a groove z' which meat slicing machines. engages the forked arm c1. The vertical The present invention is a development of extension f of the bracket e is adapted `to-65 yor improvement upon my Patent No. 916,229, support and retain three horizontal pins j, I

dated `March 23, 1909. 7c, and Z. Slidably fitted on the fixed. pins y',

` In my prior invention aforesaid I de- Z, are sleeves m, a, having forked arms o, p, scribed a device comprising a movable supadapted to engage or partially embrace the port with two Sharpeners thereon one for central pin 7c. The forked-arms 0, p, have 70 the back and one for the face of the knife, beveled or inclined faces 01, p1, and are the Sharpener for the back being arranged at capable of being displaced laterally and in an angleu to the knife edge and the Sharpener opposite directions'on their respective spin- `for the face being arranged in line theredles j, Z, and against the action of the springs with. By vertically adjusting the support g, r, by the action of the double face-cam s 7'5 the Sharpeners could be moved into and out which is rigidly secured to the central and of engagement with the knife. Under my revoluble pin l@ and is provided with an i `present invention I provide a device having Operating handle t. Depending from each means whereby both Sharpeners can be 0f the sleeves m, n, is a projection a, having simultaneously moved into engagement a hole therein. Into the hole in each pro- 80 with the knife or away therefrom by the jection a is inserted, and adjustably secured,

` simple movement `of a handle which opera Short pin 'n provided at its lower end `with ates a cam or its equivalent. It is not neca ball. bearing support w adapted to carry a y essary, in order to do this, to shift the sup- Spindle a" on the outer end of which is seport carrying the Sharpeners. cured a sharpening wheel or disk m1. As 85 In order that the invention may be clearly will be seen the one spindle carries a understood I have hereunto appended eX- sharpening wheel .r1 arranged parallel with planatory drawings, whereonzy the face of the knife el while the other Figure 1 is a side view of one form of the spindle x is at an angle to the first one and improved sharpening device and showing carries a sharpening wheel m2 at an angle to 90 `the Sharpeners out of engagement with the the edge of the knife and to the wheel m1.

40 knife c1. Fig. 2 isa plan view of the same. The wheel m1 acts on the face of the knife Fig. 3 is a front view. Fig. 4 is a plan of while the wheel m2 acts on the back beveled the sharpening device illustrated at Fig. 1, edge thereof. The spiral spring q on the but showinOY the Sharpeners in engagement pin y', acts on the sleeve m while the spiral 95 with theknlfe el. Fig. 'is a side view of a spring r, on the pin Z, acts on the sleeve a.

modified form of the sharpening device The normal position of the Sharpeners m1, m2, while Fig. 6 is a plan and Fig. 7 a front would be out of engagement with the knife, view of the same. y as shown at Figs. 1 and 2, and they are so The same reference letters and numerals held out of engagement, against the action wherever repeated indicate the same parts. of the springs g, r, by means of the cam s 5'0" In carrying out my invention, according which is turned by the handle t, so as to tothe arrangement shown at Figs. 1 to t inforce the arms of the sleeves away fromone elusive, I, preferably, make the device with another thereby pushing the wheel m1 away from the face of the knife and the wheel m2 away from the back thereof, at the same time compressing the springs g, r. On turning the cam s bv the handle t, to the position shown at Fig. 4 the sleeves m, n, are moved, by the springs r, in opposite directions, on their pins, wit the result that the wheel m1 is pressed by its Spring r and the wheel m2 by its spring g against the knife so that, when the latter is rotated, it is ground and sharpened. It will, therefore, be seen that by the mere movement of the handle t the Sharpeners can be caused to engage with or to be disengaged from the knife. The Sharpeners can be adjusted vertically to suit the knife by manipulating the nut It which, being Swivelly held by the forked arm c1, when turned, raises or lowers the screw g and support f.

In the modified arrangement shown at Figs. 5, 6, and 7 the Sharpeners aal, m2, are positively moved into engagement with the knife through parallel arrangements of links .actedon by two cams and are moved out of engagement by springs. In this case the pillar cl carries a bracket e with an upwardly extending and rectangularly shaped block 1 which is provided, on each Side with a parallel and duplicate arrangement of links marked 6, 7, 8, on the one side and 6a, 7a, 8a, onk the other side, the end members 6, 6a of which are adapted to carry the spindles m, of the Sharpeners all, 602. Preferably the links or members7, 7 a, 8, 8a, are pivotally secured at their ends 9 to the block 1 and at their opposite ends are pin jointed, respectively, to the bars 6, 6, each bar having at its lower end a pinching pin 10 and a hole for the reception of the pins o of the ball bearing supports w, Iw, of the wheels m1, wg. As will be seen the one support w is at one side of the knife and the other at the opposite side, the links being adapted to act from opposite sides of the block 1. The upper side of said block has two upwardly projecting pieces 11, 11, through which passes a short shaft 12 having, at each end thereof, a cam 13 which shaft, on being turned by means of the handle 14: secured thereto, causes the said cams to bear against the upper members 7, 7 a of the parallel link arrangements and thereby force the emery wheels downward and inward into engagement with the circular knife el. lNhen it is desired to take the wheels out of engagement with the knife the cams are turned in the reverse direction by the handle 14 rigidly attached to the shaft 12 whereupon the springs 17 automatically operate the link gears and pull the wheels away from the knife. The wheels are made adjustable on their spindles a: and are acted on by springs 18, 18, so as to keep them always up to their work. The links 7 7a, 8 and 8a are held in position and guided by means of guide bars 15, one secured at each side of the block 1. Stops 16 limit the movement of the handle 14.

The Sharpeners employed may be of any Suitable and well known kind.

Having now fully described my invention what I claim and desire to secure by Letters Patent is A 1. The combination in a device for sharpening the rotary circular knives of meat slicing machines having a rotary Sharpener adapted to act on the face of the knife, a rotary Sharpener adapted to act on the back of the knife, and means for carrying the said Sharpeners, of cam means for simultaneously moving the said Sharpeners into engagement with the knife, and means for simultaneously moving them out of engagement therewith and away from one another.

2. A device for sharpening the rotary circular knives of meat slicing machines, comprising in combination, a rotatable sharpener adapted to act on the face of the knife, a rotatable Sharpener adapted to act on the back of the knife, means for carrying the said Sharpeners, means for simultaneously moving the said Sharpeners toward one another and into engagement with the knife, and means for Simultaneously and automatically moving both of the Sharpeners out of engagement with the knife. y

3. The combination in a device for sharpening the rotary circular knives of meat slicing machines of a rotatable Sharpener adapted to act on the face of the knife, a rotatable sh'arpener adapted to act on the back of the knife, means for carrying the said Sharpeners, spring means for simultaneously and uniformly moving both the said sharpeners toward one another and into engagement with the knife and means for simultaneously moving them out of engagement therewith and away from one another.`

et. The combination in a device for sharpening the rotary circular knives of meat slicing machines of a rotary Sharpener adapted to act on the face of the knife, a rotary Sharpener adapted to act on the back of the knife, means for carrying the said Sharpeners, means for simultaneously moving the said Sharpeners into engagement with the knife, and cam means for simultaneously moving them out of engagement therewith.

5. A. device for sharpening the rotary circular knives of meat slicing machines comprising, in combination, a movable sharpener adapted to act on the face of the knife and be rotated thereby, a movable Sharpener adapted to act on the back of the knife and be rotated thereby, means for carrying the said Sharpeners, a support, pins carried by the support, a movable sleeve connected to' the one Sharpener on Vone pin, a movable sleeve connected tol the other Sharpener on j jecting arms on said sleeves, a cam on the 65 another pin, means ffor moving both sleeves simultaneously on their pins in one direction and' means for moving both sleeves simultaneously in the opposite direction.

` 6. A device for sharpening'the rotary circular `knives of meat slicing machines, coinprising, in combination, a movable Sharpener adapted to act on the face of the knife, a movable Sharpener adapted to act on the back of the knife, means for carrying the said Sharpeners, a support, pins carried by the Support, a movable sleeve connected to the one Sharpener on one pin, a movable sleeve connected to the other Sharpener on another pin, cam means for moving both Sleeves simultaneously on their pins in one direction and spring means for moving both Sleeves simultaneously in the opposite direction.

` 7 A device for sharpening the rotary circular knives of meat slicing machines,com prising, in combination, a movable sharpener adapted to act on the face of the knife, a movable Sharpener adapted to act on the back of the knife, means for carrying the said Sharpeners, a support, three pins carried by the support, a movable sleeve connected to the one Sharpener on one pin, a movable sleeve connected to the other sharpener on another pin, a cam on the third pin,

i said cam being adapted to move both sleeves leo simultaneously on their pins in one direction and spring means for moving both sleeves simultaneously in the opposite direction.

8. A device for sharpening the rotary circular knives of meat slicing machines comprising, in combination, a movable Sharpener adapted to act on the face of the knife, a movable Sharpener adapted -to act on the back of the knife, means for carrying the said Sharpeners, asupport, three pins carried by the support, a movable sleeve having a forked arm connected'to the one Sharpener on one pin, a movable sleeve having a forked arm connected to the other Sharpener on another pin, a cam on the third pin adapted to act on the said forked arms, means for moving the cam together with the sleeves and Sharpeners in one direction and means third pin `and adapted to act on said arms, a handle on `the cam, and Springs adapted to act on said sleeves and press the sharpeners against the knife.

10. A device for sharpening the rotary circular knives of meat slicing machines, comprising, in combination, a Sharpener adapted to act on the face of the knife, a Sharpener adapted to act on the back of the knife, an adjustable Support for said sharpeners, three laterally projecting pins in said support, a Sleeve carrying the one sharpener movably fitted on one pin, a sleeve carrying the other Sharpener movably fitted on a second pin, laterally projecting arms with inclined ends on said sleeves, a cam with two inclined faces on the third pin and adapted to act on said arms, a handle on the cam, and springs adapted to act on said sleeves and knife. f

11. A device for Sharpening the rotary circular knives of meat slicing machines, comprising, in combination, a Sharpener adapted to act on the face of the knife, a Sharpener adapted to act on the back of the knife, a bracket, a support adjustable vertically in the bracket by means of a screw, three laterally projecting pins in said support, a sleeve carrying the one Sharpener movably fitted on one pin, a sleeve carrying the other Sharpener movably fitted on a Second pin, springs acting on Said Sleeves, laterally projecting arms on said sleeves, a cam on the third pin and adapted to act on said arm, a handle on the cam, and Springs adapted to act on said sleeves and press the Sharpeners against the knife.

12. A device for sharpening the rotary circular knives of meat slicing machines, comprising, in combination, a Sharpener adapted to act on the face of the knife, a Sharpener adapted to act on the back of the knife, means for carrying the said sharpeners, a cam when turned manually in one direction Simultaneously moving the carrying means and therewith the Sharpeners out of engagement with the knife and springs for automatically and simultaneously meving the carrying means and therewith the Sharpeners into engagement with the knife whenever the cam is turned in the opposite direction.

13. A device for sharpening the rotary circular knives of meat slicing machines, comprising, in combination, a bracket, a pillar slidably fitted in said bracket and having a support at its upper end, means for adjusting said pillar in said bracket, laterally disposed and fixed pins in said Sup ort, a third and movable pin intermediate t ereof, sleeves on said fixed pins, springs, a cam on said intermediate pin, means for turning said cam, lateral arms on said sleeves engag- I In testimony whereof I affix my signature ing said cam, ball bearing supports depending from said sleeves, :L spindle in each ball bearing support, and a rotary Sharpener on each spindle the one Sharpener being adapted to act on one side of the knife and the other on the opposite side thereof.

in presence of two Witnesses.

WILHELMUS ADRIANUS VAN BERKEL.

Witnesses:

ADOLF Ams KLEIN, FREDERIKUS ADRIANUS HnNDBIKUs STAM. 

